Relay protection reliability calculation method and device

• Main Authors: HE RUIWEN, XU QINGCHAO, HE XIAOWANG
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2016
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a relay protection reliability calculation method and device. The relay protection reliability calculation method comprises the following steps of: obtaining a multi-mode capacity constraint matrix and a probability set of various pre-set real object components working in various modes according to the historical flow of various pre-set real object components in an intelligent transformer substation; constructing a stochastic flow network model, the reliable node edge of which is invalid; obtaining a corresponding effective-state set based on the stochastic flow network model; and calculating the relay protection reliability under the stochastic flow network model according to the effective-state set. On the basis of the method disclosed by the invention, the relay protection reliability is calculated by adopting the stochastic flow network model; and thus, a purpose of quantitatively calculating the reliability of a complex power system is achieved. 本发明公开种继电保护可靠性计算方法及装置，根据智能变电站中各个预设实物